Add --exclude-processing option (#1963)

* add --exclude-processing option

* update documentation

* add tests and address some PR comments

* fix linting errors

* TODO comment

---------

Co-authored-by: Dave Henderson <dhenderson@gmail.com>

4 files changed, 45 insertions, 4 deletions

diff --git a/internal/cmd/config.go b/internal/cmd/config.go
index 7dc53911..d0c7bff4 100644
--- a/internal/cmd/config.go
+++ b/internal/cmd/config.go
@@ -114,6 +114,11 @@ func cobraConfig(cmd *cobra.Command, args []string) (cfg *config.Config, err err
 	if err != nil {
 		return nil, err
 	}
+	cfg.ExcludeProcessingGlob, err = getStringSlice(cmd, "exclude-processing")
+	if err != nil {
+		return nil, err
+	}
+
 	includesFlag, err := getStringSlice(cmd, "include")
 	if err != nil {
 		return nil, err
diff --git a/internal/cmd/main.go b/internal/cmd/main.go
index 7a3dea98..0c5596d6 100644
--- a/internal/cmd/main.go
+++ b/internal/cmd/main.go
@@ -139,6 +139,7 @@ func InitFlags(command *cobra.Command) {
 	command.Flags().String("input-dir", "", "`directory` which is examined recursively for templates (alternative to --file and --in)")
 
 	command.Flags().StringSlice("exclude", []string{}, "glob of files to not parse")
+	command.Flags().StringSlice("exclude-processing", []string{}, "glob of files to be copied without parsing")
 	command.Flags().StringSlice("include", []string{}, "glob of files to parse")
 
 	command.Flags().StringSliceP("out", "o", []string{"-"}, "output `file` name. Omit to use standard output.")
diff --git a/internal/config/configfile.go b/internal/config/configfile.go
index 1fcccc20..76fc5306 100644
--- a/internal/config/configfile.go
+++ b/internal/config/configfile.go
@@ -49,10 +49,11 @@ type Config struct {
 	// internal use only, can't be injected in YAML
 	PostExecInput io.Reader `yaml:"-"`
 
-	Input       string   `yaml:"in,omitempty"`
-	InputDir    string   `yaml:"inputDir,omitempty"`
-	InputFiles  []string `yaml:"inputFiles,omitempty,flow"`
-	ExcludeGlob []string `yaml:"excludes,omitempty"`
+	Input                 string   `yaml:"in,omitempty"`
+	InputDir              string   `yaml:"inputDir,omitempty"`
+	InputFiles            []string `yaml:"inputFiles,omitempty,flow"`
+	ExcludeGlob           []string `yaml:"excludes,omitempty"`
+	ExcludeProcessingGlob []string `yaml:"excludeProcessing,omitempty"`
 
 	OutputDir   string   `yaml:"outputDir,omitempty"`
 	OutputMap   string   `yaml:"outputMap,omitempty"`
@@ -246,6 +247,9 @@ func (c *Config) MergeFrom(o *Config) *Config {
 	if !isZero(o.ExcludeGlob) {
 		c.ExcludeGlob = o.ExcludeGlob
 	}
+	if !isZero(o.ExcludeProcessingGlob) {
+		c.ExcludeProcessingGlob = o.ExcludeProcessingGlob
+	}
 	if !isZero(o.OutMode) {
 		c.OutMode = o.OutMode
 	}
diff --git a/internal/tests/integration/gomplateignore_test.go b/internal/tests/integration/gomplateignore_test.go
index c3220d97..a49d41ed 100644
--- a/internal/tests/integration/gomplateignore_test.go
+++ b/internal/tests/integration/gomplateignore_test.go
@@ -279,3 +279,34 @@ func TestGomplateignore_WithIncludes(t *testing.T) {
 	require.NoError(t, err)
 	assert.Equal(t, fromSlashes("rules/index.csv"), files)
 }
+
+func TestGomplateignore_WithExcludeProcessing(t *testing.T) {
+	files, err := executeOpts(t, `.gomplateignore
+*.log
+`, []string{
+		"--exclude-processing", "crash.bin",
+		"--exclude-processing", "log/*.zip",
+		"--exclude", "rules/*.txt",
+		"--exclude", "sprites/*.ini",
+	},
+		tfs.WithDir("logs",
+			tfs.WithFile("archive.zip", ""),
+			tfs.WithFile("engine.log", ""),
+			tfs.WithFile("skills.log", "")),
+		tfs.WithDir("rules",
+			tfs.WithFile("index.csv", ""),
+			tfs.WithFile("fire.txt", ""),
+			tfs.WithFile("earth.txt", "")),
+		tfs.WithDir("sprites",
+			tfs.WithFile("human.csv", ""),
+			tfs.WithFile("demon.xml", ""),
+			tfs.WithFile("alien.ini", "")),
+		tfs.WithFile("manifest.json", ""),
+		tfs.WithFile("crash.bin", ""),
+	)
+
+	require.NoError(t, err)
+	assert.Equal(t, fromSlashes(
+		"crash.bin", "logs/archive.zip", "manifest.json", "rules/index.csv",
+		"sprites/demon.xml", "sprites/human.csv"), files)
+}